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If you are assigned a project task by ITS while working on a project, you will receive an email like the following:

To open the task and view the details, click on the link "Open in TDClient":

If you are not signed in, you will be prompted to log in via SSO. Once logged in, you will see the details:

To update the task, click the
button.
Here you can update the status (New, In Process, Completed, On Hold), update the percent complete, add comments and then send a notification of the updates that you make.
Example:

Once the update is made and you click "Save", the project task will be updated and those you entered to receive a notification will get an email with the update.